Suppose that a South African Broadcasting Corporation (SABC) official wants to conduct a survey in Limpopo to estimate, with 95% confidence, a support for the premier's strategies on economy within 3% error. If the official has initial estimate that 70% of the people in Limpopo support the economic strategies of the premier. How many people should SABC survey? (3) Let Y, Y,..., Yn be a random sample whose probability density function is given by y e7, for et 0, f(y; B)=684 0